US10917226B2 - Techniques and apparatuses for time division multiplexing for dual-rat communication - Google Patents

Techniques and apparatuses for time division multiplexing for dual-rat communication Download PDF

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US10917226B2
US10917226B2 US16/155,583 US201816155583A US10917226B2 US 10917226 B2 US10917226 B2 US 10917226B2 US 201816155583 A US201816155583 A US 201816155583A US 10917226 B2 US10917226 B2 US 10917226B2
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resources
rat
communication
particular resource
downlink
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US20190109697A1 (en
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Heechoon Lee
Peter Gaal
Wanshi Chen
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Qualcomm Inc
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Qualcomm Inc
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Priority to CN201880065830.9A priority patent/CN111201826A/zh
Priority to BR112020006896-9A priority patent/BR112020006896A2/pt
Priority to EP18796225.3A priority patent/EP3695675A1/en
Priority to PCT/US2018/055194 priority patent/WO2019075047A1/en
Priority to JP2020520268A priority patent/JP6946558B2/ja
Priority to CA3075492A priority patent/CA3075492C/en
Priority to KR1020207010083A priority patent/KR102316518B1/ko
Priority to TW107135722A priority patent/TWI732140B/zh
Assigned to QUALCOMM INCORPORATED reassignment QUALCOMM INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, HEECHOON, CHEN, WANSHI, GAAL, PETER
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1438—Negotiation of transmission parameters prior to communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

Definitions

  • aspects of the present disclosure generally relate to wireless communication, and more particularly to techniques and apparatuses for time division multiplexing (TDM) for dual radio access technology (RAT) communication.
  • TDM time division multiplexing
  • RAT radio access technology
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like).
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE).
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).
  • UMTS Universal Mobile Telecommunications System
  • a method of wireless communication performed by a user equipment (UE) configured for uplink sharing for a first radio access technology (RAT) and a second RAT may include receiving scheduling information for a communication associated with a particular RAT of the first RAT or the second RAT, wherein the scheduling information identifies a particular resource of one of a first set of resources for the first RAT or a second set of resources for the second RAT, wherein one or more resources of the first set of resources are guaranteed for the first RAT based at least in part on a reference first time division duplexing (TDD) configuration, and wherein the one or more resources of the first set of resources and the second set of resources do not overlap in a time domain; and transmitting the communication using the particular resource.
  • TDD time division duplexing
  • FIG. 4 is a block diagram conceptually illustrating an example subframe format with a normal cyclic prefix, in accordance with various aspects of the present disclosure.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS.
  • the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the access network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.
  • Wireless network 100 may also include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS).
  • a relay station may also be a UE that can relay transmissions for other UEs.
  • a relay station 110 d may communicate with macro BS 110 a and a UE 120 d in order to facilitate communication between BS 110 a and UE 120 d .
  • a relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.
  • Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from modulators 232 a through 232 t may be transmitted via T antennas 234 a through 234 t , respectively.
  • the synchronization signals can be generated with location encoding to convey additional information.
  • the subframe may include 2L symbol periods, where the 2L symbol periods in each subframe may be assigned indices of 0 through 2L ⁇ 1.
  • a scheduling unit for the FDD may be frame-based, subframe-based, slot-based, symbol-based, and/or the like.
  • a base station synchronization communication may include different information than a user equipment synchronization communication.
  • one or more base stations synchronization communications may exclude PBCH communications.
  • a base station synchronization communication and a user equipment synchronization communication may differ with respect to one or more of a time resource used for transmission or reception of the synchronization communication, a frequency resource used for transmission or reception of the synchronization communication, a periodicity of the synchronization communication, a waveform of the synchronization communication, a beamforming parameter used for transmission or reception of the synchronization communication, and/or the like.
  • a UE may be located within the coverage of multiple BSs. One of these BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria such as received signal strength, received signal quality, path loss, and/or the like. Received signal quality may be quantified by a signal-to-noise-and-interference ratio (SINR), or a reference signal received quality (RSRQ), or some other metric. The UE may operate in a dominant interference scenario in which the UE may observe high interference from one or more interfering BSs.
  • SINR signal-to-noise-and-interference ratio
  • RSRQ reference signal received quality
  • New radio may refer to radios configured to operate according to a new air interface (e.g., other than Orthogonal Frequency Divisional Multiple Access (OFDMA)-based air interfaces) or fixed transport layer (e.g., other than Internet Protocol (IP)).
  • OFDM Orthogonal Frequency Divisional Multiple Access
  • IP Internet Protocol
  • NR may utilize OFDM with a CP (herein referred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using TDD.
  • the local architecture of RAN 500 may be used to illustrate fronthaul definition.
  • the architecture may be defined that support fronthauling solutions across different deployment types.
  • the architecture may be based at least in part on transmit network capabilities (e.g., bandwidth, latency, and/or jitter).
  • the architecture may enable cooperation between and among TRPs 508 .
  • cooperation may be preset within a TRP and/or across TRPs via the ANC 502 .
  • no inter-TRP interface may be needed/present.
  • a dynamic configuration of split logical functions may be present within the architecture of RAN 500 .
  • the packet data convergence protocol (PDCP), radio link control (RLC), media access control (MAC) protocol may be adaptably placed at the ANC or TRP.
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • a BS may include a central unit (CU) (e.g., ANC 502 ) and/or one or more distributed units (e.g., one or more TRPs 508 ).
  • CU central unit
  • distributed units e.g., one or more TRPs 508
  • FIG. 5 is provided merely as an example. Other examples are possible and may differ from what was described with regard to FIG. 5 .
  • FIG. 6 illustrates an example physical architecture of a distributed RAN 600 , according to aspects of the present disclosure.
  • a centralized core network unit (C-CU) 602 may host core network functions.
  • the C-CU may be centrally deployed.
  • C-CU functionality may be offloaded (e.g., to advanced wireless services (AWS)), in an effort to handle peak capacity.
  • AWS advanced wireless services
  • a centralized RAN unit (C-RU) 604 may host one or more ANC functions.
  • the C-RU may host core network functions locally.
  • the C-RU may have distributed deployment.
  • the C-RU may be closer to the network edge.
  • a distributed unit (DU) 606 may host one or more TRPs.
  • the DU may be located at edges of the network with radio frequency (RF) functionality.
  • RF radio frequency
  • the DL-centric subframe may also include a DL data portion 704 .
  • the DL data portion 704 may sometimes be referred to as the payload of the DL-centric subframe.
  • the DL data portion 704 may include the communication resources utilized to communicate DL data from the scheduling entity (e.g., UE or BS) to the subordinate entity (e.g., UE).
  • the DL data portion 704 may be a physical DL shared channel (PDSCH).
  • PDSCH physical DL shared channel
  • the DL-centric subframe may also include an UL short burst portion 706 .
  • the UL short burst portion 706 may sometimes be referred to as an UL burst, an UL burst portion, a common UL burst, a short burst, an UL short burst, a common UL short burst, a common UL short burst portion, and/or various other suitable terms.
  • the UL short burst portion 706 may include one or more reference signals. Additionally, or alternatively, the UL short burst portion 706 may include feedback information corresponding to various other portions of the DL-centric subframe.
  • the UL short burst portion 706 may include feedback information corresponding to the control portion 702 and/or the data portion 704 .
  • information that may be included in the UL short burst portion 706 include an acknowledgment (ACK) signal (e.g., a physical uplink control channel (PUCCH) ACK, a physical uplink shared channel (PUSCH) ACK, an immediate ACK), a negative ACK (NACK) signal (e.g., a PUCCH NACK, a PUSCH NACK, an immediate NACK), a scheduling request (SR), a buffer status report (BSR), a hybrid automatic repeat request (HARQ) indicator, a channel state indication (CSI), a channel quality indicator (CQI), a sounding reference signal (SRS), a demodulation reference signal (DMRS), PUSCH data, and/or various other suitable types of information.
  • the UL short burst portion 706 may include additional or alternative information, such as information pertaining to random access channel (RACH) procedures,
  • the end of the DL data portion 704 may be separated in time from the beginning of the UL short burst portion 706 .
  • This time separation may sometimes be referred to as a gap, a guard period, a guard interval, and/or various other suitable terms.
  • This separation provides time for the switch-over from DL communication (e.g., reception operation by the subordinate entity (e.g., UE)) to UL communication (e.g., transmission by the subordinate entity (e.g., UE)).
  • DL communication e.g., reception operation by the subordinate entity (e.g., UE)
  • UL communication e.g., transmission by the subordinate entity (e.g., UE)
  • FIG. 7 is provided merely as an example. Other examples are possible and may differ from what was described with regard to FIG. 7 .
  • the UL-centric subframe may also include an UL short burst portion 806 .
  • the UL short burst portion 806 in FIG. 8 may be similar to the UL short burst portion 706 described above with reference to FIG. 7 , and may include any of the information described above in connection with FIG. 7 .
  • the foregoing is merely one example of an UL-centric wireless communication structure, and alternative structures having similar features may exist without necessarily deviating from the aspects described herein.
  • a wireless communication structure such as a frame, may include both UL-centric subframes and DL-centric subframes.
  • the ratio of UL-centric subframes to DL-centric subframes in a frame may be dynamically adjusted based at least in part on the amount of UL data and the amount of DL data that are transmitted. For example, if there is more UL data, then the ratio of UL-centric subframes to DL-centric subframes may be increased. Conversely, if there is more DL data, then the ratio of UL-centric subframes to DL-centric subframes may be decreased.
  • FIG. 8 is provided merely as an example. Other examples are possible and may differ from what was described with regard to FIG. 8 .
  • a UE may share uplink and/or downlink resources between two or more RATs.
  • the UE may share the uplink and/or downlink resources between a first RAT (e.g., a 4G or LTE RAT) and a second RAT (e.g., a 5G or NR RAT).
  • a first RAT e.g., a 4G or LTE RAT
  • a second RAT e.g., a 5G or NR RAT
  • the LTE RAT may be associated with an LTE primary cell (PCell).
  • the LTE PCell may be associated with a TDD configuration or an FDD configuration.
  • a TDM approach may be used for the 4G RAT and the 5G RAT to improve wireless communication performance.
  • Communications using the two or more RATs may be scheduled using a dynamic approach (e.g., wherein any resource can be scheduled for a communication using the 4G RAT or the 5G RAT) or a semi-static approach (e.g., wherein particular resources are guaranteed or designated for the 4G RAT or the 5G RAT).
  • a purely semi-static approach may restrict flexibility of the communications, particularly in 5G, and a purely dynamic approach may waste some resources. For example, assume that a UE needs to transmit an acknowledgment or a periodic communication in a particular subframe. In that case, a preceding downlink subframe that must carry a grant for the acknowledgment or the periodic communication cannot carry downlink data other than the grant. This may cause problems in the dynamic scheduling case.
  • Some techniques and apparatuses described herein use a semi-static scheduling approach for 4G and a semi-static or dynamic approach for 5G.
  • 4G communications may be associated with one or more guaranteed resources based at least in part on a reference TDD configuration, thereby reducing a likelihood of conflict between the 4G communications and 5G grants or communications.
  • 5G communications may use a semi-static approach, which may improve availability of downlink resources even when not all uplink resources are available.
  • 5G communications may use a dynamic approach, which may provide for more flexible adaptation to different traffic conditions.
  • communications for a shared uplink or downlink UE may be performed using a semi-static approach for a first RAT (e.g., 4G or LTE) and a semi-static or dynamic approach for a second RAT (e.g., 5G or NR), which improves flexibility of the shared uplink or downlink UE and reduces collisions between traffic of the first RAT and traffic of the second RAT.
  • a first RAT e.g., 4G or LTE
  • a second RAT e.g., 5G or NR
  • the term “4G” may be used interchangeably with “LTE.”
  • the term “5G” may be used interchangeably with “NR.”
  • the techniques and apparatuses described herein are primarily described in the context of 4G RATs and 5G RATs, the techniques and apparatuses described herein are not so limited. Indeed, the techniques and apparatuses described herein may be applied for any combination of a first RAT and a second RAT (e.g., a first type of RAT and a second type of RAT).
  • 4G/LTE is provided merely as an example of a first RAT
  • 5G/NR is provided merely as an example of a second RAT.
  • FIGS. 9A and 9B are diagrams illustrating examples 900 of time division multiplexing for dual-RAT communication, in accordance with various aspects of the present disclosure.
  • FIGS. 9A and 9B describe allocation of TDM resources for a communication associated with a 4G RAT or a 5G RAT, though any combination of a first RAT and a second RAT is contemplated.
  • the communication may be a transmission, such as an uplink transmission of the UE 120 .
  • the UE 120 is configured to perform a dual-RAT communication technique with regard to the 4G RAT and the 5G RAT.
  • the UE 120 may be configured to perform uplink sharing with regard to the 4G RAT and the 5G RAT.
  • resources (e.g., uplink resources) of the UE 120 may be divided between the 4G RAT and the 5G RAT based at least in part on a TDM approach, as described in more detail below.
  • a BS 110 may schedule a 4G transmission for a UE 120 .
  • the 4G transmission may be an uplink data transmission, an uplink data retransmission (e.g., for uplink HARQ), an acknowledgment or negative acknowledgment (e.g., for downlink HARQ), and/or the like.
  • the BS 110 may schedule the 4G transmission using a TDM resource of a semi-static resource allocation.
  • the BS 110 may identify the TDM resource based at least in part on a reference TDD configuration.
  • the 4G RAT and, in some cases, the 5G RAT
  • the 4G RAT may be associated with a reference TDD configuration.
  • the TDM resource when the 4G transmission is associated with a downlink HARQ communication, the TDM resource may be selected based at least in part on a fixed HARQ timeline (e.g., a legacy LTE HARQ timeline), irrespective of an actual number of uplink subframes allocated for the 4G RAT.
  • the UE 120 may bundle HARQ feedback for the downlink HARQ communication, and may provide bundled HARQ feedback in a resource identified by the fixed HARQ timeline. This may allow all 4G downlink subframes to be usable for the downlink HARQ communication, whereas, if a dynamic HARQ timeline were used, some 4G downlink subframes would be used for scheduling HARQ communications.
  • the TDM resource may not necessarily be selected from resources of the reference TDD configuration.
  • the TDM resource for the 4G transmission (e.g., for an uplink data transmission or an uplink data retransmission) may be selected according to a FDD timeline and/or a TDD downlink/uplink configuration.
  • the FDD timeline may be an asynchronous HARQ timeline, a 4 ms+4 ms HARQ timeline, a 4 ms+6 ms HARQ timeline, and/or the like.
  • the BS 110 may schedule a 5G communication for the UE 120 .
  • the BS 110 may schedule the 5G communication in a 5G TDM resource based at least in part on a semi-static approach or a dynamic approach.
  • the BS 110 may schedule uplink resources for the 5G transmission without using a reference 5G TDD configuration.
  • the uplink resources may not be guaranteed for the 5G RAT.
  • This may provide increased flexibility for dynamic downlink HARQ and/or dynamic uplink HARQ, and may provide for usage of gaps in 4G communication of the UE 120 for 5G communications.
  • the UE 120 may use a combination of the semi-static approach and the dynamic approach. For example, the UE 120 may use a reference 5G TDD configuration to identify guaranteed resources for 5G, and may selectively schedule resources other than the guaranteed resources for 4G or 5G.
  • the BS 110 may transmit the scheduling information to the UE 120 , and, as shown by reference number 960 , the UE 120 may perform the 5G transmission in the TDM resource.
  • the BS 110 can adapt dynamically with regard to a traffic ratio of 4G traffic to 5G traffic in the uplink.
  • the operations described in connection with FIGS. 9A and 9B can be performed for 4G and 5G communications in a same frequency band, and can be performed for 4G and 5G communications in different frequency bands.
  • FIGS. 9A and 9B are provided as examples. Other examples are possible and may differ from what was described with respect to FIGS. 9A and 9B .
  • FIG. 10 is a diagram illustrating an example process 1000 performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Example process 1000 is an example where a UE (e.g., UE 120 ) performs time division multiplexing for dual-RAT communication.
  • a UE e.g., UE 120
  • process 1000 may include receiving scheduling information for a communication associated with a particular RAT of a first RAT or a second RAT, wherein the scheduling information identifies a particular resource of one of a first set of resources for the first RAT or a second set of resources for the second RAT, wherein one or more resources of the first set of resources are guaranteed for the first RAT based at least in part on a reference first TDD configuration of a UE (block 1010 ).
  • the UE may receive scheduling information from a base station (e.g., BS 110 ).
  • the scheduling information may be for a communication (e.g., an uplink communication) associated with a particular RAT of a first RAT and a second RAT.
  • the scheduling information may identify a particular resource of one of a first set of resources for the first RAT or a second set of resources for the second RAT.
  • One or more resources of the first set of resources may be guaranteed for the first RAT based at least in part on a reference first TDD configuration of the UE.
  • the one or more resources of the first set of resources and the second set of resources do not overlap in a time domain.
  • the first RAT may be a 4G RAT and the second RAT may be a 5G RAT.
  • process 1000 may include transmitting the communication using the particular resource (block 1020 ).
  • the UE e.g., using controller/processor 280 , transmit processor 264 , TX MIMO processor 266 , MOD 254 , antenna 252 , and/or the like
  • the first set of resources includes the one or more resources of the first set of resources and one or more additional resources.
  • the first RAT is associated with a frequency division duplexing configuration, and the particular resource is based at least in part on the reference first TDD configuration.
  • the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication, and the particular resource is based at least in part on the reference first TDD configuration.
  • the UE may receive downlink data of the downlink HARQ communication in any subframe (e.g., any subframe of the first set of resources.
  • the first RAT is associated with a TDD downlink/uplink configuration, and the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication, and the particular resource is based at least in part on the reference first TDD configuration.
  • the first RAT is associated with a TDD downlink/uplink configuration, and the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication.
  • the UE may receive downlink data for the downlink HARQ communication in a resource identified by the TDD downlink/uplink configuration.
  • the particular resource is for an uplink hybrid automatic repeat request (HARQ) payload, and the particular resource is selected based at least in part on a frequency division duplexing timeline for the first RAT.
  • the particular resource is for an uplink hybrid automatic repeat request (HARQ) payload, and the particular resource is selected based at least in part on a TDD downlink/uplink configuration of the first RAT.
  • one or more resources of the second set of resources are guaranteed for the second RAT based at least in part on a reference second TDD configuration of the UE.
  • the one or more resources of the first set of resources and the one or more resources of the second set of resources do not overlap in time.
  • the first set of resources and the second set of resources collectively include more resources than are collectively included in the one or more resources of the first set of resources and the one or more resources of the second set of resources.
  • the particular resource is of the second set of resources, and the communication is associated with a hybrid automatic repeat request (HARQ) communication; and the particular resource is selected based at least in part on a dynamic HARQ timeline.
  • the one or more resources of the first set of resources are guaranteed for a periodic communication of the UE.
  • the first set of resources is associated with a different frequency than the second set of resources.
  • the first RAT comprises a 4G RAT and the second RAT comprises a 5G RAT
  • process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. 10 . Additionally, or alternatively, two or more of the blocks of process 1000 may be performed in parallel.
  • FIG. 11 is a diagram illustrating an example process 1100 performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Example process 1100 is an example where a base station (e.g., BS 110 ) performs time division multiplexing for dual-RAT communication.
  • a base station e.g., BS 110
  • process 1100 may include transmitting scheduling information to a UE for a communication associated with a particular RAT of a first RAT or a second RAT, wherein the scheduling information identifies a particular resource of one of a first set of resources for the first RAT or a second set of resources for the second RAT, wherein one or more resources of the first set of resources are guaranteed for the first RAT based at least in part on a reference first TDD configuration, and wherein the one or more resources of the first set of resources and the second set of resources do not overlap in a time domain (block 1110 ).
  • the base station may transmit scheduling information.
  • the scheduling information may be for a communication (e.g., an uplink communication, an uplink data communication, an uplink data recommunication, etc.) associated with a particular RAT of a first RAT or a second RAT.
  • the scheduling information may identify a particular resource (e.g., a TDM resource) of one of a first set of resources for the first RAT or a second set of resources for the second RAT.
  • One or more resources of the first set of resources may be guaranteed for the first RAT based at least in part on a reference first TDD configuration of the UE.
  • the one or more resources of the first set of resources may be non-overlapped with the second set of resources in the time domain.
  • the first RAT may be a 4G RAT and the second RAT may be a 5G RAT.
  • process 1100 may include receiving the communication using the particular resource (block 1120 ).
  • the base station e.g., using controller/processor 240 , transmit processor 220 , TX MIMO processor 230 , MOD 232 , antenna 234 , DEMOD 232 , MIMO detector 236 , receive processor 238 , controller/processor 240 , and/or the like
  • Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the first set of resources includes the one or more resources of the first set of resources and one or more additional resources.
  • the first RAT is associated with a frequency division duplexing configuration, and the particular resource is based at least in part on the reference first TDD configuration.
  • the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication, and the particular resource is based at least in part on the reference first TDD configuration.
  • HARQ downlink hybrid automatic repeat request
  • the base station may transmit downlink data of the downlink HARQ communication in any subframe (e.g., any subframe of the first set of subframes).
  • the first RAT is associated with a TDD downlink/uplink configuration
  • the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication
  • HARQ downlink hybrid automatic repeat request
  • the first RAT is associated with a TDD downlink/uplink configuration
  • the communication is associated with feedback for a downlink hybrid automatic repeat request (HARQ) communication.
  • the base station may transmit downlink data for the downlink HARQ communication in a resource identified by the TDD downlink/uplink configuration.
  • the particular resource is for an uplink hybrid automatic repeat request (HARQ) payload, and the particular resource is selected based at least in part on a frequency division duplexing timeline for the first RAT.
  • HARQ uplink hybrid automatic repeat request
  • the particular resource is for an uplink hybrid automatic repeat request (HARQ) payload, and the particular resource is selected based at least in part on a TDD downlink/uplink configuration of the first RAT.
  • one or more resources of the second set of resources are guaranteed for the second RAT based at least in part on a reference second TDD configuration of the UE.
  • the one or more resources of the first set of resources and the one or more resources of the second set of resources do not overlap in time.
  • the first set of resources and the second set of resources collectively include more resources than are collectively included in the one or more resources of the first set of resources and the one or more resources of the second set of resources.
  • process 1100 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. 11 . Additionally, or alternatively, two or more of the blocks of process 1100 may be performed in parallel.
  • the term component is intended to be broadly construed as hardware, firmware, or a combination of hardware and software.
  • a processor is implemented in hardware, firmware, or a combination of hardware and software.
  • satisfying a threshold may refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c).

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US16/155,583 US10917226B2 (en) 2017-10-11 2018-10-09 Techniques and apparatuses for time division multiplexing for dual-rat communication
KR1020207010083A KR102316518B1 (ko) 2017-10-11 2018-10-10 듀얼-rat 통신에 대한 시분할 멀티플렉싱을 위한 기법들 및 장치들
EP18796225.3A EP3695675A1 (en) 2017-10-11 2018-10-10 Techniques and apparatuses for time division multiplexing for dual-rat communication
PCT/US2018/055194 WO2019075047A1 (en) 2017-10-11 2018-10-10 TECHNIQUES AND APPARATUS FOR TIME DIVISION MULTIPLEXING FOR DOUBLE RAT COMMUNICATION
JP2020520268A JP6946558B2 (ja) 2017-10-11 2018-10-10 デュアルｒａｔ通信のための時分割多重化のための技法および装置
CA3075492A CA3075492C (en) 2017-10-11 2018-10-10 Techniques and apparatuses for time division multiplexing for dual-rat communication
CN201880065830.9A CN111201826A (zh) 2017-10-11 2018-10-10 用于针对于双rat通信的时分复用的方法和装置
BR112020006896-9A BR112020006896A2 (pt) 2017-10-11 2018-10-10 técnicas e aparelho para multiplexação por divisão de tempo para comunicação de rat dupla
TW107135722A TWI732140B (zh) 2017-10-11 2018-10-11 用於針對於雙rat通訊的分時多工的方法和裝置

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TWI732140B (zh) 2021-07-01
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CN111201826A (zh) 2020-05-26
BR112020006896A2 (pt) 2020-10-06
KR20200061357A (ko) 2020-06-02
TW201924276A (zh) 2019-06-16
CA3075492A1 (en) 2019-04-18
JP2020537425A (ja) 2020-12-17
JP6946558B2 (ja) 2021-10-06
CA3075492C (en) 2022-09-06
EP3695675A1 (en) 2020-08-19

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